Nice thread. I think using a system as a starting point is a good way to start the journey. However, ultimately one must create their own system through trial and error and error and error until one finds what works for them consistently.

The "edge" is born from that trial and error (not the original system itself) imho, but the starting block could helps cut down the time spent getting to the "edge".

During the trial and error process the other very important elements start to coalesce as well (hopefully before the trading account is empty) - money management and psychology.